I limited my picks to fighters who waged all out assaults at the ring of the bell. those Who if their opponent met them in the center of the ring and went toe to toe, 99 times out of a hundred the opponent would be carried out unconscious. Duran Pac Armstrong Louis Tyson Foreman Trinidad Chavez Gomez Robinson Zarate lopez Dempsey liston
Floyd Jr. top1 on Instagram , very offensive....just kidding ...in my list i only have 5 that i like when it comes to offense : Ali , Duran , SRL , Iron Mike , Pac
Marciano fits your description better than any of the guys you listed. A few guys actually had to be carried out of the ring unconscious after Marciano KOed them.
Foreman should never be mentioned as he was easily thwarted if he didn't get you early. He was spanked like a baby against ALI an never forgot it. They hid his lack of stamina issues